<!DOCTYPE html>
<html lang="ch" xmlns:th="http://www.thymeleaf.org">
<head>
  <meta charset="UTF-8">
  <title></title>
</head>
<body>
<button onclick="location.href='/show_users'">用户管理</button>
<button onclick="location.href='/add_vote'">发布投票</button>
<button onclick="location.href='/show_votes'">查看投票</button>
</body>
</html>